﻿using Microsoft.VisualBasic;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Entity
{
     public class Study
    {
        [Key]
        public Guid id { get; set; }
        public DateTime AddTime { get; set; }
        public DateTime DelTime { get; set; }
    }
}
